Sewer-block.



A. s. MGGOMBE.

SEWER BLOCK. APPLIGATIDN'HLED HBA, 191s.

l ,087, l Patented Fm@` 1jr, 1914.

ALBERT s. MCCOMBE, or AKRON, omo.

SEWER-BLOCK.

To all whom it Imay concern Be it known that I, ALBERT S. MCCouBn, a citizen ot the United States, and resident of Akron, in the county of Summit and State of Ohio` have invented a new and useful Improvement in Sewer-Blocks; and I do hereby declare the following to be a full, clear, and exact description thereof.

)I v invention relates to hollow sewerblocks.

The object of my invention is to provide a. joint or connection between the ends of adjoining blocks by means of which a strong interlocking connection is obtained and at the same time the joint reinforced against crushing strain.

To these ends my invention comprises the novel features hereinafter set forth and claimed.

j In the accompanying drawing Figure 1 is a plan view of my improved block; Fig. 2 is a side view; Fig. 3 is a longitudinal sec-v tion through the joint; Fig. 4 is an end View; and Fig. 5 is a sect-ion on the line' 5 5 Fig. 1.

The block designated by the numeral Q is composed of the top plate 3 and the bottom plate 4 both slightly curved to conform to the circumference of the sewer and said bottom and top plates are connected by the sides 5 with the interior web portions 6 and 7, which form the upper and lower conduits 8 and 9 extending through the block. One end of each block is squared off to present a straight face 10 and the opposite end is provided with the lugs 11 and l2. These lugs project beyond the straight abutting portions 13 of the block, and two sets of said lugs are employed as shown in Fig. 1, one set of said lugs being adapted to enter the conduit on one side of the web 6 and the other set on the conduit at the other side of said web.

Where the lugs 11 and 12 project from the block they contract the opening at that end of the block as at 14. The lugs 11 and 12 are so' arranged that when inserted in the conduits 8 of the adjoining blocks with the ends abutting and the top and bottom plates Specification of Letters Patent.

Application filed February 4. 1913.

Patented Feb. 17, 1914.

Serial No. 746,249.

3 and l Hush, a mortar space 15 is left between the outer faces of the lugs and the in ner faces ofthe top plate 3 and the upper face of the web 7. This space is filled in with mortar and acts to form a mortarclench to secure a strong joint between' the sections of block, and furthermore, the lugs 11 and 12 act to reinforce or stiifen the joint E giving` it more power to resist any crushing strainswhich may tend to break inv the sewer at the joint. The space 14 between the lugs -in addition to the open spaces 16 and 17 keep up the communication between the block sections and provide for the drainage of any water that may collect in the conduits 8.

The lugs are preferably round as at 18 and 19 to avoid any interference with the passage of water and the presentation of any abrupt faces.

By having the mortar-joint between the block sections within the conduit"8 the Inortar does not lind its way into the interior of the sewer and does not bulge from the points of the sewer into the same, so as to in any wav retard the passage of sewage.

What I claim is:

hollow sewer block having a horizontal web portion dividing saidblock into inner and outer conduits and having a flat end face at one end, the opposite end having disconnected projecting lugs, one projecting from the upper plate of said block, the other projecting from said web and forming a contracted passage between said lugs leading into the. outer conduit, said lugs when eX# tending into the outer-conduit of the adjoining section forming mortar spaces between the outer faces of said lugs and the inner face ot'the outer plate and web of said adjoining block.

In testimony whereof, I the said ALBERT S. MCCOMBE have hereunto set my hand.

ALBERT S. MCCOMBE. 

